Abstract: An apparatus and a method for configuring antenna arrays for scalable radio frequency (RF) architecture are dis-closed. A subset of antenna arrays are grouped into K groups and a receive or transmit weight vector is applied to each of the antenna arrays in each of the K groups. A channel response is measured for each of the antenna in the K groups. The response is summed for each group and complex scaling factors are calculated based on the summed response. Based on the scaling factors the antenna weight vectors arc updated and the updated weight vectors arc applied to the antenna arrays. The steps of grouping the antennas and refining the weight vectors are performed till the antenna weight vectors reach a steady point, i.e. the current antenna weight does not improve the beamforming gain by a predetermined threshold in comparison to the previous antenna weight.

Abstract: Systems and methods for beam splitting using multiple antennas are disclosed. An example wireless networking device includes an antenna system having a plurality of antennas; and a controller configured to select test beam antenna weight vectors (AWVs) configured to detect and/or localize a responder device, receive channel measurement responses corresponding to the test beam AWVs, determine a combined beam AWV directed substantially towards the responder device based, at least in part, on the test beam AWVs and/or the corresponding channel measurement responses, and configure the antenna sub-system to form a wireless communication channel according to the determined combined beam AWV between the wireless networking device and the responder device.

Abstract: Antenna diversity for beacons. An access point device may include multiple antenna arrays. A series of beacons may be transmitted using each of the antenna arrays in sequence. The beacons may include configuration information usable by wireless devices to determine when to respond to the beacons. The access point may receive responses during a series of response periods, using each of the antenna arrays.

Abstract: Various techniques are provided to efficiently detect the position and angular velocity of an unmanned aerial vehicle (UAV) of a UAV system including a transmitter antenna array and a receiver antenna array. In one example, a method includes establishing a wireless link between a UAV controller and a UAV using at least one transmitter antenna array and/or at least one receiver antenna array, communicating link state data corresponding to the established wireless link over the established wireless link, generating UAV operational data based, at least in part, on the link state data, wherein the UAV operational data is configured to control operation of the UAV, and controlling operation of the UAV using the UAV operational data.

Abstract: An apparatus and a method for configuring antenna arrays for scalable radio frequency (RF) architecture are dis-closed. A subset of antenna arrays are grouped into K groups and a receive or transmit weight vector is applied to each of the antenna arrays in each of the K groups. A channel response is measured for each of the antenna in the K groups. The response is summed for each group and complex scaling factors are calculated based on the summed response. Based on the scaling factors the antenna weight vectors arc updated and the updated weight vectors arc applied to the antenna arrays. The steps of grouping the antennas and refining the weight vectors are performed till the antenna weight vectors reach a steady point, i.e. the current antenna weight does not improve the beamforming gain by a predetermined threshold in comparison to the previous antenna weight.

Abstract: An apparatus and a method for configuring antenna arrays for scalable radio frequency (RF) architecture are disclosed. A subset of antenna arrays are grouped into K groups and a receive or transmit weight vector is applied to each of the antenna arrays in each of the K groups. A channel response is measured for each of the antenna in the K groups. The response is summed for each group and complex scaling factors are calculated based on the summed response. Based on the scaling factors the antenna weight vectors are updated and the updated weight vectors are applied to the antenna arrays. The steps of grouping the antennas and refining the weight vectors are performed till the antenna weight vectors reach a steady point, i.e. the current antenna weight does not improve the beamforming gain by a predetermined threshold in comparison to the previous antenna weight.

Abstract: Antenna diversity for beacons. An access point device may include multiple antenna arrays. A series of beacons may be transmitted using each of the antenna arrays in sequence. The beacons may include configuration information usable by wireless devices to determine when to respond to the beacons. The access point may receive responses during a series of response periods, using each of the antenna arrays.

Abstract: Antenna diversity for beacons. An access point device may include multiple antenna arrays. A series of beacons may be transmitted using each of the antenna arrays in sequence. The beacons may include configuration information usable by wireless devices to determine when to respond to the beacons. The access point may receive responses during a series of response periods, using each of the antenna arrays.

Abstract: Antenna diversity for beacons. An access point device may include multiple antenna arrays. A series of beacons may be transmitted using each of the antenna arrays in sequence. The beacons may include configuration information usable by wireless devices to determine when to respond to the beacons. The access point may receive responses during a series of response periods, using each of the antenna arrays.

Abstract: Various techniques are provided to efficiently detect the position of an object relative to a compact radar system including a transmitter antenna array and a receiver antenna array. In one example, a method includes designating a plurality of transmitter and receiver channels for a transmitter antenna array and a receiver antenna array of an object sensing system, scanning the transmitter antenna array and the receiver antenna array through the designated channels to measure channel responses corresponding to each one of the designated channels, and determining a directional vector to or from an object scanned by at least one of the designated channels based, at least in part, on the measured channel responses.

Abstract: An apparatus and a method for configuring antenna arrays for scalable radio frequency (RF) architecture are disclosed. A subset of antenna arrays are grouped into K groups and a receive or transmit weight vector is applied to each of the antenna arrays in each of the K groups. A channel response is measured for each of the antenna in the K groups. The response is summed for each group and complex scaling factors are calculated based on the summed response. Based on the scaling factors the antenna weight vectors are updated and the updated weight vectors are applied to the antenna arrays. The steps of grouping the antennas and refining the weight vectors are performed till the antenna weight vectors reach a steady point, i.e. the current antenna weight does not improve the beamforming gain by a predetermined threshold in comparison to the previous antenna weight.

Abstract: Various techniques are provided to efficiently detect the position and angular velocity of an object relative to a compact radar system including a transmitter antenna array and a receiver antenna array. In one example, a method includes repeatedly scanning a transmitter antenna array and a receiver antenna array of an object sensing system through a plurality of designated transmitter and receiver channels over a period of time to generate a time series of measured channel responses corresponding to each one of the designated channels, determining a time series of directional vectors to or from an object scanned by at least one of the designated channels, and/or a corresponding time series of average phase differences, based, at least in part, on the time series of measured channel responses, and determining an angular velocity of the object from the time series of directional vectors and/or the corresponding time series of average phase differences.

Abstract: Systems and methods for beam splitting using multiple antennas are disclosed. An example wireless networking device includes an antenna system having a plurality of antennas; and a controller configured to determine directional antenna weight vectors (AWVs) directed substantially towards other wireless networking devices, determine a split beam AWV from the directional AWVs, and configure the antenna sub-system to form multiple wireless communication channels over the determined split beam AWV between the wireless networking devices. A split beam formed by the wireless networking device according to the split beam AWV maximizes a minimum gain towards, or provides at least a preset threshold minimum gain towards, each of the at other wireless networking devices.

Abstract: Techniques are disclosed for coding video in the present of transmission errors experience in a network. When a new coding unit is presented for coding, a transmission state of a co-located coding unit from a preceding frame may be determined. If the transmission state of the co-located coding unit from the preceding frame indicates an error, an intra-coding mode may be selected for the new coding unit. If the transmission state of the co-located coding unit from the preceding frame does not indicate an error, a coding mode may be selected for the new coding unit according to a default process. The new coding unit may be coded according to the selected coding mode, and transmitting across a network. These techniques find ready application in network environments that provide low latency acknowledgments of transmitted data.

Abstract: A method for transcoding data comprises receiving an input stream of data formatted according to a USB standard, the input stream is partitioned into a sequence of blocks having a fixed length. At least one input block of the input stream comprises one or more data symbols and one or more control symbols, the one or more control symbols include one or more general control symbols. The method also includes transcoding the at least one input block to generate at least one output block comprising a synchronization block and a control/data block. The control/data block comprises the one or more data symbols of the at least one input block, a representation of the one or more general control symbols of the at least one input block, and a plurality of indicators indicating locations of the one or more data symbols and control symbols in the at least one input block.

Abstract: A method for transcoding data comprises receiving an input stream of data formatted according to a USB standard, the input stream is partitioned into a sequence of blocks having a fixed length. At least one input block of the input stream comprises one or more data symbols and one or more control symbols, the one or more control symbols include one or more general control symbols. The method also includes transcoding the at least one input block to generate at least one output block comprising a synchronization block and a control/data block. The control/data block comprises the one or more data symbols of the at least one input block, a representation of the one or more general control symbols of the at least one input block, and a plurality of indicators indicating locations of the one or more data symbols and control symbols in the at least one input block.

Abstract: Network nodes acquire bandwidth in contention-based networks for handling video traffic. A request to reserve a channel for transmission of a payload is sent prior to a network node receiving the payload. The payload is a burst of video data that is generated periodically. A network node determines a time period for reserving the channel. The network node determines when to initiate contending for the channel and the time period for transmitting the payload to another network node. A network node determines when a payload is expected to arrive and monitors its back off time period at least a time period prior to receiving a payload. The network node also monitors transmission of the payload and adjusts when to initiate contending for the channel.

Abstract: Systems and methods for beam splitting using multiple antennas are disclosed. An example wireless networking device includes an antenna system having a plurality of antennas; and a controller configured to select test beam antenna weight vectors (AWVs) configured to detect and/or localize a responder device, receive channel measurement responses corresponding to the test beam AWVs, determine a combined beam AWV directed substantially towards the responder device based, at least in part, on the test beam AWVs and/or the corresponding channel measurement responses, and configure the antenna sub-system to form a wireless communication channel according to the determined combined beam AWV between the wireless networking device and the responder device.

Abstract: Systems and methods for beam splitting using multiple antennas are disclosed. An example wireless networking device includes an antenna system having a plurality of antennas; and a controller configured to determine directional antenna weight vectors (AWVs) directed substantially towards other wireless networking devices, determine a split beam AWV from the directional AWVs, and configure the antenna sub-system to form multiple wireless communication channels over the determined split beam AWV between the wireless networking devices. A split beam formed by the wireless networking device according to the split beam AWV maximizes a minimum gain towards, or provides at least a preset threshold minimum gain towards, each of the at other wireless networking devices.

Abstract: A method for transcoding data comprises receiving an input stream of data formatted according to a USB standard, the input stream is partitioned into a sequence of blocks having a fixed length. At least one input block of the input stream comprises one or more data symbols and one or more control symbols, the one or more control symbols include one or more general control symbols. The method also includes transcoding the at least one input block to generate at least one output block comprising a synchronization block and a control/data block. The control/data block comprises the one or more data symbols of the at least one input block, a representation of the one or more general control symbols of the at least one input block, and a plurality of indicators indicating locations of the one or more data symbols and control symbols in the at least one input block.